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Microchip Technology MIC2800-D2FMYML-TR
- Part No.:
- MIC2800-D2FMYML-TR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-VFQFN
- Datasheet:
-
MIC2800-D2FMYML-TR.pdf
- Description:
- IC REG TRPL BUCK/LNR 2MHZ 16QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC2800-D2FMYML-TR from Microchip Technology is a digital power management IC integrating a 2 MHz, 600 mA PWM buck DC/DC converter and two independent 300 mA LDO regulators (LDO1 fed from DC/DC output, LDO2 fed directly from VIN). It features adjustable Power-on Reset (POR) delay, LOWQ mode reducing total quiescent current to 30 µA, and 75 µVRMS output noise in LOWQ mode-enabling clean power delivery for RF-sensitive applications like SAMA5D2 MPU core and I/O rails.
For engineers reviewing the MIC2800-D2FMYML-TR datasheet, MIC2800-D2FMYML-TR pinout, MIC2800-D2FMYML-TR application, or MIC2800-D2FMYML-TR equivalent, key selection criteria include dual-LDO sequencing control via EN1/EN2, LOWQ mode's ultra-low-noise operation without PFM ripple, POR flag logic OR of all three outputs, and QFN-16 package compatibility with tight board space constraints in portable MPU systems.
Technical Context
The MIC2800-D2FMYML-TR implements a hybrid regulation architecture: its DC/DC converter operates in fixed-frequency 2 MHz PWM mode above ~50 mA load and transitions to LOWQ linear mode below that threshold, eliminating switching noise while maintaining regulation. LDO1 derives input from the DC/DC output (e.g., 1.8 V → 1.5 V), enabling high-efficiency cascaded conversion, while LDO2 accepts direct VIN (2.7–5.5 V) input for independent rail generation.
Its POR circuit monitors all three regulated outputs (DC/DC, LDO1, LDO2) and asserts an open-drain low signal if any falls below 90% of nominal voltage; delay time is programmable from 0 to 1 s via CSET capacitor. The LOWQ pin enables leakage-free interfacing with backup-power-domain host I/Os due to ESD protection without clamping diodes to supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, USB, and industrial 3.3 V/5 V rails without external pre-regulation. |
| DC/DC Output Current | 600 mA in PWM mode - sufficient to power ARM Cortex-A5/A7 cores at full frequency with headroom for transient loads. |
| LDO1/LDO2 Output Current | 300 mA each - enables simultaneous powering of DDR I/O, analog peripherals, and communication interfaces. |
| LOWQ Mode IQ | 30 µA total - extends battery life in sleep states while maintaining regulated 1.8 V/2.8 V rails for real-time clock and sensor subsystems. |
| Output Noise (LOWQ) | 75 µVRMS - meets stringent RF receiver sensitivity requirements by eliminating PFM-induced spectral interference. |
| Thermal Shutdown | 160 °C with 23 °C hysteresis - prevents thermal runaway during sustained 600 mA DC/DC operation in compact enclosures. |
| Package | 16-pin 3 mm × 3 mm QFN - surface-mount footprint compatible with automated assembly and thermal vias for 45 °C/W θJA. |
Pinout & Package
Tiny 16-pin 3 mm × 3 mm QFN leadless package with exposed thermal pad; requires solder mask defined pads and thermal vias to SGND/PGND planes for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: LOWQ | Mode Control Input | Active-low logic input selecting PWM (HIGH) or ultra-low-noise linear (LOW) operation; ESD-safe for backup-power-domain MCU GPIOs. |
| Pin 2: BIAS | Internal Bias Supply | Supplies internal reference and control circuitry via 6 Ω resistor; requires 0.1 µF ceramic bypass to SGND for stable operation. |
| Pins 3 & 4: SGND / PGND | Signal / Power Ground | Separate ground paths isolate noise-sensitive control circuitry (SGND) from high-current switch node return (PGND). |
| Pin 5: SW | Switch Node Output | Drives external 2.2 µH inductor; high dv/dt node requiring short, shielded routing away from analog traces. |
| Pins 6 & 7: VIN | DC/DC and LDO2 Input | Dual VIN pins must be externally tied; powers both buck stage and LDO2; requires ≥4.7 µF ceramic bulk capacitance near PGND. |
| Pin 8: LDO2 | LDO2 Regulated Output | 300 mA output referenced to PGND; minimum 2.2 µF ceramic output capacitor required for stability. |
| Pin 9: FB | DC/DC Feedback Input | Connects to DC/DC output for fixed-voltage versions; sets output voltage via internal resistor divider (no external resistors needed). |
| Pin 10: LDO | LOWQ Linear Regulator Output | Provides regulated output in LOWQ mode; connects to DC/DC output node to supply LDO1 when DC/DC is disabled. |
| Pin 11: LDO1 | LDO1 Regulated Output | 300 mA output powered by DC/DC output (not VIN); ideal for post-regulating 1.8 V → 1.5 V for core logic. |
| Pin 12: POR | Open-Drain Reset Flag | Asserts low if any output drops below 90% nominal; requires external pull-up to enable system-level reset coordination. |
| Pin 13: CSET | POR Delay Timing | Current source (1.25 µA) charges external capacitor to set POR assertion delay up to 1 s; cannot be grounded. |
| Pin 14: CBYP | Reference Bypass | 0.1 µF capacitor reduces reference noise and improves PSRR; optional but recommended for RF-critical designs. |
| Pins 15 & 16: EN1 / EN2 | Enable Inputs | CMOS-compatible active-high enables: EN1 controls DC/DC + LDO1; EN2 controls LDO2 only; both require VIH ≥ 1.0 V. |
Key Features
| Feature | Design Value |
|---|---|
| LOWQ Mode | Reduces total IQ to 30 µA while delivering regulated output with 75 µVRMS noise-eliminates PFM ripple interference in RF receivers and ADC references. |
| Programmable POR Delay | CSET pin allows precise POR assertion timing (0–1 s) via external capacitor, enabling synchronized power-up sequencing across multi-rail systems. |
| Leakage-Free Backup Interface | LOWQ and POR pins lack clamping diodes to supply rails, permitting direct connection to backup-power MCU GPIOs without parasitic current paths. |
| Independent Dual Enable Control | EN1 and EN2 allow granular power gating: DC/DC+LDO1 can be disabled while LDO2 remains active for always-on peripherals or RTC. |
| Thermal & Current Protection | Integrated thermal shutdown (160 °C) and per-channel current limiting prevent damage during overload or PCB layout faults. |
Applications
| Embedded MPU Core Power | Portable RF System Power |
|---|---|
Use Scenario: Powering ARM-based SAMA5D2 MPU core (VDD_CORE) and DDR I/O (VDDIO_DDR) from single 3.6 V Li-ion cell. IC Role / Device Role / Timing Role: MIC2800-D2FMYML-TR generates 1.8 V (DC/DC) → 1.5 V (LDO1) for core logic and 2.8 V (LDO2) for DDR interface, with POR coordinating reset assertion. Use Value: Cascaded DC/DC+LDO1 achieves >90% efficiency at 300 mA load while LDO2 delivers low-noise 2.8 V for DDR signaling integrity. | Use Scenario: Supplying BLE/Wi-Fi SoC with separate analog RF, digital baseband, and memory rails. IC Role / Device Role / Timing Role: MIC2800-D2FMYML-TR provides 1.8 V (DC/DC) for digital logic, 1.2 V (LDO1) for RF synthesizer, and 3.3 V (LDO2) for PA bias-all with independent enable control. Use Value: LOWQ mode silences switching noise during receive intervals, preserving RF receiver NF and adjacent channel rejection. |
| Wearable Sensor Hub Power | Backup Power Sequencing |
Use Scenario: Powering multi-sensor hub (accelerometer, gyroscope, environmental) with ultra-low standby current. IC Role / Device Role / Timing Role: MIC2800-D2FMYML-TR uses LOWQ mode (30 µA IQ) to maintain 1.8 V and 2.8 V rails during motion-triggered sleep, waking only on interrupt. Use Value: 75 µVRMS noise ensures clean analog front-end supply, preventing offset drift and quantization errors in 16-bit ADCs. | Use Scenario: Maintaining RTC and SRAM retention during main power loss in industrial controller. IC Role / Device Role / Timing Role: MIC2800-D2FMYML-TR's LOWQ and POR pins interface directly with backup domain GPIOs, asserting POR only after backup rail stabilizes. Use Value: Leakage-free pin design eliminates parasitic discharge of backup supercapacitor, extending hold-up time by >20% versus conventional PMICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple-output PMIC with 2.25 MHz DC/DC (600 mA), dual 300 mA LDOs; no LOWQ mode; higher IQ (80 µA) in LP mode. | Lacks ultra-low-noise light-load operation; POR not programmable; requires external sequencing logic for complex power-up. | Select when fixed-frequency operation and higher light-load IQ are acceptable, and POR delay flexibility is not required. |
| ISL95210IRZ-T | Single 600 mA DC/DC + dual 300 mA LDOs; supports DVS; 35 µA IQ in deep sleep; no integrated POR or CSET programmability. | No built-in POR flag or delay adjustment; requires external supervisor IC for reset coordination; less suited for backup-power-domain interfacing. | Choose for dynamic voltage scaling needs where POR independence and leakage-free backup I/O are secondary priorities. |
Compared with TPS65023BRSBR and ISL95210IRZ-T, the MIC2800-D2FMYML-TR uniquely combines programmable POR delay, leakage-free backup I/O capability, and 75 µVRMS LOWQ noise-making it optimal for RF-critical, battery-constrained, and fail-safe embedded systems requiring precise power sequencing without external components.
Availability
MIC2800-D2FMYML-TR is available at Aetrix Electronics and suitable for embedded MPU power, portable RF systems, wearable sensor hubs, and backup power sequencing requiring stable component supply across automotive-grade temperature ranges (–40°C to +125°C).
Supply support for MIC2800-D2FMYML-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MIC2800 product line delivers highly integrated, low-noise power management ICs designed specifically for ARM-based MPUs and SoCs requiring sequenced, efficient, and ultra-clean multi-rail power in space-constrained portable and industrial applications.
FAQ
What is the function of the LOWQ pin on the MIC2800-D2FMYML-TR?
The LOWQ pin on the MIC2800-D2FMYML-TR is an active-low logic input that selects between two operating modes: when pulled HIGH (>1 V), the device operates in 2 MHz PWM mode delivering up to 600 mA; when pulled LOW (<0.2 V), it enters LOWQ mode with 30 µA total IQ and 75 µVRMS output noise. Its ESD structure lacks clamping diodes, enabling safe interfacing with backup-power-domain host I/Os even when main power is absent-ensuring reliable operation in MIC2800-D2FMYML-TR–based battery-backed systems.
How does the POR functionality work in the MIC2800-D2FMYML-TR?
The POR output of the MIC2800-D2FMYML-TR is an open-drain signal that goes LOW if any of the three regulated outputs (DC/DC, LDO1, or LDO2) falls below 90% of its nominal voltage. Its assertion delay after power-up is programmable from 0 to 1 second using an external capacitor on the CSET pin (delay in µs = CSET in pF). The MIC2800-D2FMYML-TR POR performs a logical OR across all enabled outputs, making it ideal for coordinated system reset in multi-rail applications without external supervisors.
Can the MIC2800-D2FMYML-TR support different output voltage configurations?
Yes-the MIC2800-D2FMYML-TR supports multiple output voltage options through factory-programmed fixed-output variants. The DC/DC converter offers fixed outputs including 1.8 V and 1.87 V; LDO1 is typically configured for 1.5 V (fed from DC/DC output); LDO2 supports fixed outputs such as 2.8 V. The FB pin is internally terminated for fixed versions, eliminating external resistors. While the MIC2800-D2FMYML-TR itself is a specific fixed-voltage variant, the broader MIC2800 family includes adjustable versions using external feedback dividers.
What are the thermal limitations of the MIC2800-D2FMYML-TR in continuous operation?
The MIC2800-D2FMYML-TR has a maximum junction temperature of +125°C and thermal shutdown activation at +160°C with 23°C hysteresis. Its 16-pin QFN package exhibits θJA = 45°C/W. Under worst-case conditions (TA = +85°C, 600 mA DC/DC load), power dissipation must remain below 889 mW to avoid thermal shutdown. Proper PCB layout-including thermal vias under the exposed pad connected to inner ground planes-is essential to maintain MIC2800-D2FMYML-TR reliability in high-density applications.
How does the MIC2800-D2FMYML-TR manage power sequencing between its three outputs?
The MIC2800-D2FMYML-TR enables precise power sequencing via independent enable inputs: EN1 controls both the DC/DC converter and LDO1, while EN2 controls LDO2 separately. This allows staggered turn-on-for example, enabling LDO2 first for I/O initialization, then EN1 to bring up core voltage and LDO1. The POR output reflects the OR of all enabled outputs, providing a single system-ready signal. No external sequencing IC is needed, simplifying BOM and layout for MIC2800-D2FMYML-TR–based designs.
MIC2800-D2FMYML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (2)
- Number of Outputs:
- 3
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 1.87V, 600mA
- Voltage/Current - Output 2:
- 1.2V, 300mA
- Voltage/Current - Output 3:
- 1.5V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MIC2800-D2FMYML-TR FAQ
1.How can I place an order for MIC2800-D2FMYML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2800-D2FMYML-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MIC2800-D2FMYML-TR reliable?
The price and inventory of MIC2800-D2FMYML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2800-D2FMYML-TR is usually 5 days.
3.What payment methods are accepted for MIC2800-D2FMYML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2800-D2FMYML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2800-D2FMYML-TR?
MIC2800-D2FMYML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2800-D2FMYML-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MIC2800-D2FMYML-TR?
For technical support, including MIC2800-D2FMYML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2800-D2FMYML-TR requirements.
6.How does Aetrix verify that MIC2800-D2FMYML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2800-D2FMYML-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MIC2800-D2FMYML-TR meets industry standards.
7.What is the process for return or replacement of MIC2800-D2FMYML-TR?
All MIC2800-D2FMYML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2800-D2FMYML-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MIC2800-D2FMYML-TR part is unused and in its original packaging.
Return procedure for MIC2800-D2FMYML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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